r22042: Try and clean up my own mess using the API Volker

r22042: Try and clean up my own mess using the API Volker
suggested. I now use :

BOOL is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)

Volker, please criticize and comment. Thanks,

Jeremy.